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Assessment the Role of Sediment in the Sumber Brantas Rivers Watershed Affected by Agroforestry Activities Barlah Rumhayati; Hari Siswoyo; MH. Chusnuddin Nurochman
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.576

Assessment the role of sediment in the Sumber Brantas River watershed has been conducted in Sumber Brantas, Bumiaji, Batu. The area has been affected by agroforestry activities. The assessment was focused to the availability of nutrients (phosphorous and nitrogen compounds) and metals in sediment and water column. Water and sediment samples were collected from outlet Sumber Brantas watershed in Arboretrum, Sumber Brantas, Bumiaji, Batu, Malang in July 2013. Assessment of physical and chemical water properties included pH, conductivity, temperature, TDS, DO, COD, total P and reactive P, nitrate and ammonia, dissolved metals (Al, Fe, Mn, Ca, Mg). Meanwhile, the assessment of physical and chemical properties of sediment included texture, porosity, density, pH, redox potensial, DO, organic matter, N and P sediment solution, total metals, and exchangeable metals. Results showed that water body of Sumber Brantas watershed was oxic. The level of nitrate in wPater bodies was higher than ammonia level due to nitrification process while the level of FRP was low. Most of P in the water bodies were adsorbed onto oxide/hydroxide metals and bound to metals. The sediment was at anoxic condition. The immediately pool of P was lower than the potential P pools. The level order of sedimentary inorganic P in the sediment was residual-P > HCl-P > BD-P > NaOH-P> NH4Cl-P. Although the level of DO in sediment was low so that the denitrification was occurred but the P could not easily released from the FeOOH surface. The complex of FeOOH-P in sediment was stable to be dissociated so P was not released into water bodies even under anoxic condition. Therefore, the role of sediment of the Sumber Brantas River watershed was as a for P compounds while nitrate in the sediment was subjected to change and equilibrate with ammonia.

Identifikasi Pola Aliran Air Tanah di Wilayah Sekitar Aliran Sungai Jilu Frida Rani Yuniar; Hari Siswoyo; Dasapta Erwin Irawan
Jurnal Sains dan Edukasi Sains Vol 5 No 1 (2022): Jurnal Sains dan Edukasi Sains
Publisher : Faculty of Science and Mathematics, Universitas Kristen Satya Wacana, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/juses.v5i1p1-8

Penelitian ini dilakukan dengan tujuan untuk mengidentifikasi pola aliran air tanah di wilayah sekitar aliran Sungai Jilu sepanjang 7 km yang melintas di wilayah Kecamatan Pakis Kabupaten Malang dan Kecamatan Kedungkandang Kota Malang. Tata guna lahan di lokasi penelitian ini terdiri atas lahan pertanian di wilayah bagian hulu sungai yang diamati dan pemukiman penduduk di wilayah bagian hilir sungai yang diamati. Identifikasi pola aliran air tanah dilakukan berdasarkan peta kontur muka air tanah dan peta arah aliran air tanah. Peta-peta tersebut disusun berdasarkan data elevasi muka air tanah yang diukur dari 53 buah sumur gali milik penduduk sekitar yang tersebar di lokasi penelitian. Berdasarkan penelitian yang telah dilakukan dapat dinyatakan bahwa elevasi muka air tanah di lokasi penelitian berada pada kisaran +426,2 m dpl hingga +485,9 m dpl. Elevasi muka air tanah tertinggi berada di wilayah Kelurahan Cemorokandang Kecamatan Kedungkandang sedangkan elevasi muka air tanah terendah berada di wilayah Kelurahan Kedungkandang Kecamatan Kedungkandang. Aliran air tanah di lokasi penelitian mengalir dari arah Timur (sisi kanan aliran sungai) menuju ke arah Barat (sisi kiri aliran sungai). Berdasarkan 6 cross section yang rutin diamati, secara umum teridentifikasi jenis hubungan antara air tanah dan sungai dimana air tanah mengalir menuju ke aliran sungai.

Perancangan Sistem Pemanenan Air Hujan Skala Rumah Tangga untuk Pemenuhan Kebutuhan Air Bersih dan Konservasi Air Tanah Aldi Ainun Habibi; Hari Siswoyo; Riyanto Haribowo
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol 6 No 1 (2022): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : Dewan Pimpinan Daerah (DPD) Perkumpulan Dosen Indonesia Semesta (DIS) Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36339/je.v6i1.530

The problems that commonly occurred in the field of water resources were the lack of clean water in the dry season and excess water in the wet season. Those problems may impact on efforts to fulfil the need for clean water. One of the efforts that can be used to overcome those problems is rainwater harvesting. The purpose of this research was to design a rainwater harvesting system to fulfil the need for clean water during the dry season and groundwater conservation in the wet season. The design of the system includes the roof of the rainwater harvesting building, rainwater harvesting reservoirs, infiltration wells, and rainwater quality treatment equipment. The roof of the rainwater harvesting building was designed with a size of 6.50 m x 5.00 m. The runoff discharge from the roof is 1,084.02 liters/hour. The available rainwater harvesting reservoir has a capacity of 5,300 liters. There were 2 units of infiltration wells that function to absorb abundant rainwater from rainwater harvesting reservoirs, each well is 0.80 m in diameter and 1.35 m deep. Utilization of water from rainwater harvesting reservoirs can be done after going through the process in rainwater quality treatment equipment. The results of this activity can be recommended for widespread application.

Evaluasi Kerentanan Akuifer Menggunakan Metode Simple Vertical Vulnerability Berdasarkan Hasil Penyelidikan Geolistrik (Studi Kasus di Desa Sumberpasir, Kecamatan Pakis, Kabupaten Malang) Julia Putri Rosalinda; Hari Siswoyo; Sri Wahyuni
Jurnal Ilmiah Universitas Batanghari Jambi Vol 22, No 2 (2022): Juli
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v22i2.2026

There are indications of water pollution due to industrial waste, which can be seen from the rivers and springs condition in Sumberpasir Village. So it is necessary to investigate the vulnerability of the aquifer using SVV method. There are three parameters that must be calculated as the index value of the SVV method, thickness of the unsaturated zone, percolation value, and material type of the unsaturated zone. From the three parameter values, the SVV index will be obtained as an aquifer vulnerability assessment. The SVV index was mapped into the distribution of aquifer vulnerability using the Surfer program. The results of the study resulted in five types of rock lithology materials as a result of interpretation from geoelectrical investigations based on adjustments to actual conditions in the field. The layer with the lowest resistivity is clay, the second layer is tuff, the third layer is sandy tuff, the fourth layer is pumice, and the fifth layer is breccia. From the three parameters of the SVV calculation, the SVV index value is between 54 which is interpreted as having a moderate vulnerability until 76 with a very low vulnerability. So that Sumberpasir Village is considered likely to be safe against aquifer vulnerability. The distribution of vulnerability levels in the research location is divided into three, very low vulnerability (18.65% of the total area Sumberpasir Village), low vulnerability (60.03%), and medium vulnerability (21.32%).

Chemical Characteristics of Surface Water of Sumpil River and Groundwater on its Surroundings Mukhlis Arief Irvandi; Hari Siswoyo; Dasapta Erwin Irawan
Urecol Journal. Part E: Engineering Vol. 2 No. 1 (2022): January-June
Publisher : Konsorsium LPPM Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

The objective of this study was to know the chemical characteristics of surface water in a segment of Sumpil River and the groundwater on its surrounding. The location of this study was in 3 cross sections, consisting of 1 well on the right of the Sumpil River, 1 well on the left of the Sumpil River flow, and 1 point on the Sumpil River flow. The chemical characteristics of the water were determined by the concentrations of cations and anions in the water sample using the Piper Trilinear Diagram with the GW Chart 1.30 computer program. Based on the results of the study, it was shown that the chemical characteristics of the Sumpil River water and the groundwater at the location of this study were the same, where all water samples had an alkaline earth metals content over the alkali content (zone 1), had a strong acidic content exceeding the weak acidic content (zone 4), have a balanced cation and anion pairs, none of which exceed 50% (zone 9), and shown that all of the water in the location of this study were fresh water.

Performance Assessment of Agrotourism Oriented Irrigation Systems in Subak Sembung, Denpasar City I Gusti Ayu Widi Agripina; Hari Siswoyo; Sumiyati Sumiyati
BERKALA SAINSTEK Vol 11 No 2 (2023)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v11i2.36887

Subak Sembung has a wide coverage area of 103 ha of rice fields with a total length of 5.1 km of tertiary irrigation canals. The Subak Sembung area has experienced land conversion of 14 ha which has had an impact on the performance of the subak system. The strategy that can be implemented to maintain the sustainability of the subak system is to develop agrotourism. Based on the survey results at the study area, there are several problems that have the potential to disrupt the performance of the irrigation system, including damage to irrigation structures and leakage of irrigation canals, and a lack of support for subak development towards agrotourism. The aim of this study was to assess the condition and performance of an agrotourism-oriented irrigation system in Subak Sembung. This research was conducted using field survey and interview methods. Field surveys were carried out with the aim of determining the conditions of agrotourism-oriented irrigation systems. Interviews were conducted to assess the performance of an agrotourism oriented irrigation system using the subak assessment form based on the Tri Hita Karana developed by the Udayana University Subak Unit and the agro-tourism form. Based on the research that has been done, it can be stated that the condition of the agrotourism oriented irrigation system in Subak Sembung is good. This is shown based on the functioning of irrigation network assets and non-irrigation networks. The performance of agrotourism oriented irrigation systems in Subak Sembung is in the range of 3.66 - 5.00 in the good category.

Chemical Characteristics of Surface Water of Sumpil River and Groundwater on its Surroundings Mukhlis Arief Irvandi; Hari Siswoyo; Dasapta Erwin Irawan
Urecol Journal. Part E: Engineering Vol. 2 No. 1 (2022): January-June
Publisher : Konsorsium LPPM Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53017/uje.137

The objective of this study was to know the chemical characteristics of surface water in a segment of Sumpil River and the groundwater on its surrounding. The location of this study was in 3 cross sections, consisting of 1 well on the right of the Sumpil River, 1 well on the left of the Sumpil River flow, and 1 point on the Sumpil River flow. The chemical characteristics of the water were determined by the concentrations of cations and anions in the water sample using the Piper Trilinear Diagram with the GW Chart 1.30 computer program. Based on the results of the study, it was shown that the chemical characteristics of the Sumpil River water and the groundwater at the location of this study were the same, where all water samples had an alkaline earth metals content over the alkali content (zone 1), had a strong acidic content exceeding the weak acidic content (zone 4), have a balanced cation and anion pairs, none of which exceed 50% (zone 9), and shown that all of the water in the location of this study were fresh water.

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